Spam call
Block the number, report to your phone app

Ring several seconds and hang up, multiple times

Hung Up

I had 2 Missed Calls (on my Mobile) from (03) 8751 8384 on Tuesday April 20th. The first one Rang for 16 seconds, and the second one for 3 seconds.
I tried to call back using the 1831 Prefix to Block My Number, but I don't know if they answered or not, because I couldn't hear anything due to Background/Traffic Noise. I tried again (about 12:45am on Wednesday 21st), with my Landline, but it was Engaged.
So I looked it up on hear, but NO RESULTS FOUND. It sounds like it's a Cold Call Canvasser or Scam Call, because NOBODY Calls for 16 seconds and/or 3 seconds. These Callers are usually using a Computer Dialling App in a Database Program, and are callung more than one number at one time: The first one to Answer is the one they take.

ps .. If you Search a Number on here, but get NO RESULTS, Dial The Number from your Phone/Mobile with 1831 before it, to Block Your Number. Cover the Mouth Piece, and when they Answer, if it's someone you know you can just Talk To Them, but if you Don't Know Them, just Hang Up. Until you Know Who It Is, DO NOT BLOCK THE NUMBER; because it could be a Familiar Business or a Person You Know, calling from a Number that you are Unfamiliar With.

Caller: Unsolicited call

Caller ID spoofing robocall. Silence followed by termination after answering.

Called 3 times, an hour apart. No message left
Never bother to answer. Numbers are now blocked.

missed call - no voice msg left. constantly calls

probably scammer